Pulley-block.



UNITED STATES PATENT OFFICE. ALBEli/I. H. NELLER, OF FAIRFIELD, IOWA,ASSIGNOR TO LOUDEN MACHINERY COMPANY,

' OF FAIRFIELD, IOWA, A CORPORATION OF IOWA.

PULLE Y-B LO OK.

Application filed December 21, 1907.

Specification of Letters Patent.

specification, and more specifically pointed out in the claims.

In the accompanying drawings forming a part of this specification,Figure 1 is a perspective of a pulley block embodying my invention asused with a separate block and rope to form a regular block and tackle.Fig. 2 is the same in another position, the front part of the frame ofthe block being broken away to show the working parts. Fig. 3 is a frontor edge view of the block without the rope. Fig. 4 is a front view of alever to operate the brake, the central portion being broken away. Fig.5 is a side elevation of the brake. Fig. 6 is a side eleva tion of thelower end of the brake lever.

Referring to the drawings, A represents the frame of the pulley block,preferably consisting of two plates, to which a strap B is attached forthe connection of the sustaining hook C. Usually the block is made intwo divisions by the insertion of a central plate A and two sheaves D,are mounted in the spaces between the plates.

E represents an eye secured to the lower end of the pulley block.

F is a separate block and G is a rope rigged in the usual manner of ablock and tackle. The plates comprising the frame of the pulley blockare preferably held together by means of rivets R which are passed throuh thimbles or sleeves S inserted between tie plates to hold them theproper distance apart. Similar rivets and sleeves are preferably used ina central part of the plates and the sheaves D are mounted upon them.The two upper rivets are also used to secure the strap B' to plates A.

H represents the brake having a central perforation h, and its lower endpreferably broadened and corrugated to more effectively grip the rope.Its upper end is preferably bifurcated as indicated by dotted lines inFig. 5 and is fitted with a small perforation.

It is mounted upon one of the upper rivets, the thimble being passedthrough the perforation it, so as to stand immediately over the sheaveover which the free end of the rope G is passed.

L represents a brake lever having a central perforation b means of whichit is pivoted upon the aX e or rivet upon which the sheaves D aremounted. Its lower end is fitted with an eye M through which the freeend of the rope G is passed. To its upper end is pivoted a connectingplate or link N, the oflice of which is to connect the upper ends of thelever and the brake together. The lever L is preferably made of twopieces so it can straddle the sheave adjacent to it. The eye M has anextended portion P which is secured between the lower end of the piecesby means of a rivet Q and the connecting link N is pivoted between theupper ends by means of a rivet T. In order to hold the eye M moresecurely in its place, small lu s U are formed on the sides of theportionIP adjoining the eye proper, and notches are formed in the lowerends of the pieces L so as to receive the lugs and hold the eye inpermanent position. The inner end of the link N is inserted in thebifurcated end of the brake H and is held in place by means of a rivetV. This end of the link is fitted with an extension n so as to come incontact with the bottom of the bifurcated end of the brake and thus toprevent too great a movement of the brake and the lever.

It will be seen that by pulling out on the free end of the rope G thelever L will be tilted and the brake drawn away from ongagement with therope, in which case the rope will be free to run over the sheaves D.Also, that by drawing the rope in toward the pulley block the lever Lwill be brought into a more perpendicular position and the brake L willbe brought into operative contact with the rope thus holding it from abackward movement. In this way the operator while elevating the load.can stand at some dis tance from it and not be in danger of being struckby the movement of the load being elevated. Further, when the pulleyblock is used for stretching a barbed wire or woven wire the operatorcan stand at a distance from the wire while operating it and not be inso great danger of being injured by the barbs as if the operativeposition of the rope was close to the Wire. A single inward movement issufficient to lock the ro e and in making this movement there is litt eor no danger of injury, from the material being handled. The eye Epreferably has a vertical slot in the center of its upper end so it willstraddle the lower end of the plate A while the sleeves S are insertedin transverse horizontal perforations in the head of the eye so as tohold it in place. This insures the central location of i the eye E andpermits it to swing freely in whatever direction it may be drawn by therope.

The pulley block is exceedingly simple in construction and effective inoperation.

What I claim is 1. In pulley blocks, a frame, a sheave mounted in theframe, a rope passed over the sheave, a brake pivoted in'the frame abovethe sheave and adapted to grip the rope and be released therefrom, and alever pivoted in the body of the frame adjacent to the sheave andextending above and below it, its lower end having an eye through whichthe rope is passed, and its upper end connected to the brake so that thelateral movement of the rope in the eye will rock the lever on its pivotand operate the brake, the lever being so arranged that its alinementwill be substantially within a plane of the lateral dimensions of theblock.

2. In pulley blocks, a frame, a sheave mounted in the frame, a ropepassed over the sheave, a brake pivoted in the frame above the sheaveand adapted to grip the rope and be released therefrom, and a leverpivoted in the body of the frame and composed of two parts rivetedtogether and surrounding the sheave and extending above and below it,its lower end having an eye through which the rope is passed and its uper end connected to the brake, so that the ateral movement of the ropein the eye will rock the lever on its pivot and operate the brake inboth directions.

3. In pulley blocks, a frame, a sheave mounted in the frame, a ropepassed over the sheave, a brake pivoted in the frame above the sheaveandadapted to grip the rope and be released therefrom, and a lever pivotedon the axle on which the sheave is mounted and extending above and belowit, its lower end having an eye through which the rope is passed and itsupper end connected to the brake, so that the lateral movement of therope in the eye will rock the lever on its pivot and operate the brake,the lever being so arranged that its alinement will be substan tiallywithin a plane of the lateral dimensions of the block.

4:. In pulley blocks, a frame, a sheave mounted in the frame, a ropepassed over the sheave, a brake pivoted in the frame above the sheaveand adapted to grip the rope and be released therefrom and a leverpivoted in the body of the frame and composed of two parts rivetedtogether and surrounding the sheave and extending above and below it,its lower end having an eye secured between the said parts through whichthe rope is passed, and its u per end connected to the brake, so thatthe ateral movement of therope irithe eye will rock the lever on itspivot and operate the brake in both directions.

5. In pulley blocks, a frame, a sheave mounted in the frame, a ropepassed over the sheave, a brake pivoted in the frame above the sheaveand adapted to grip the rope and be released therefrom, and a leverpivoted in the body of the frame and composed of two parts rivetedtogether and surrounding the sheave and extending above and below it,its lower end having notches in each of the parts and an eye throughwhich the rope is passed secured between the said arts and having lugswhich engage the sai notches thereof, and its upper end connected to thebrake, so

that the lateral movement of the rope in the ate the brake.

6. In pulley blocks, a frame, a sheave mounted in the frame, a ropepassed over the sheave, a brake pivoted at its center in the frame abovethe sheave having its lower end adapted to grip the rope, a connectinglink pivoted to the upper end of the said brake, and a lever pivoted inthe body of the frame adjacent to the sheave, and extending above andbelow it, its upper end being pivoted to the said connecting link, andits lower end having an eye through which the rope is passed so that thelateral movement of the rope in the eye will rock the lever on its pivotand o erate the brake.

7. n pulley blocks, a frame, a sheave mounted in the frame, a ropepassed over the 5 sheave, a brake pivoted at the center in the frameabove the sheave, having its lower end adapted togrip the rope and bereleased therefrom, a connecting link pivoted to the upper arm of thesaid brake, and a lever pivoted in the body of the frame and composed oftwo parts riveted together and surrounding the sheave and extendingabove and below it, the said connecting link being pivoted to the up erend between the parts thereof, and its ower end having an eye throughwhich the rope is passed so that the lateral movement of the rope in theeye will rock the lever on its pivot and operate the brake.

8. In pulley blocks, a frame, a sheave mounted in the frame, a ropepassed over the sheave, a brake pivoted at the center in the frame abovethe sheave having its lower end adapted to grip the rope and be releasedtherefrom, a connecting link pivoted to the upper arm of the said brake,and a lever pivoted in the body of the frame and composed of two partsriveted together and surrounding the sheave and extending above andbelow it, the said connecting link being pivoted tothe upper end betweenthe parts thereof, and its lower end having an eye secured between thesaid parts through which the rope is passed so that the lateral movementof the rope in the eye will rock the lever on its ivot and operate thebrake.

9. n pulley blocks, a frame, having a central dividing piece, a sheavemounted on each side of said piece, a rivet to hold the parts of theframe together, an eye having a slot in one end to straddle the centraldividing piece and a transverse hole in the slotted end through whichthe rivet is passed.

10. In pulley blocks, a frame, a sheave mounted in the frame, a ropepassed over the sheave, a brake pivoted at its center in the frame abovethe sheave having its lower end adapted to grip the rope, a connectinglink pivoted to the upper arm of the said brake and having a projectingpoint adapted to come in contact with and limit the movement of thebrake, and a lever pivoted in the body of the frame adjacent to thesheave and extending above and below it, its upper end being pivoted tothe said connecting link, and its lower end having an eye through whichthe rope is passed so that the lateral movement of the rope in the eyewill rock the lever on its pivot and operate the brake.

ALBERT H. NELLER. \Vitnesses:

EDMOND E. JACKSON, LAURA J. KAMP.

